Example 8.9: Contrasts

October 12, 2010

(This article was first published on SAS and R, and kindly contributed to R-bloggers)

In example 8.6 we showed how to change the reference category. This is the natural first thought analysts have when their primary comparisons aren’t represented in the default output. But our interest might center on a number of comparisons which don’t share a category. Or we might need to compare one group with the mean of the other groups. Today we’ll explore tests and estimates of effects

To leave a comment for the author, please follow the link and comment on their blog: SAS and R.

R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...

If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Tags: , , , , , ,

Comments are closed.


Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)